In the United States and Canada there are many birds colored primarily yellow and black. This is a common color pattern of several species of finches, tanagers, orioles, meadowlarks and warblers.

At first they all look like pretty blue birds with black marks. But look closer ... the keratin pattern causes red and yellow wavelengths to cancel each other out, while blue wavelengths of ...

In good light, black on wings and tail shine with iridescent green, blue ... birds in the south average smaller and tend to show bare dark grayish skin below eye (similar in shape to the yellow ...

Here is a list of the most colourful birds in the world. The scarlet macaw is a large parrot species. It can grow 32 inches long and weigh up to 2.2 pounds. Mainly red in color, it also has blue wings ...

The prothonotary warbler is a small, migratory, bright yellow songbird that returns to the Kansas City area from Central America during the spring and summer. As millions of birds prepare to take ...